ASTROSAT CZTI

Data Quality Report

Orbit 50947

Creation date: 2025-03-19T17:09:36.936003
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C07_001T01_9000006450_50947cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50947cztM0_level2_quad_clean.evt
Size (bytes)981,550,08091,370,880
Size936.1 MB 87.1 MB
Events in quadrant A14,777,202319,247
Events in quadrant B5,702,417723,033
Events in quadrant C7,185,608617,322
Events in quadrant D8,077,116574,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0492700
B0223490
C0266390
D0293670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7652456659.670674%
B76527339.579195%
C765392012.021430%
D7653113414.817719%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7652 7652 4123 4123 53.88% 53.88%
B 7652 7652 376 376 4.91% 4.91%
C 7653 7653 750 750 9.80% 9.80%
D 7653 7653 924 924 12.07% 12.07%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 43 10659601 76028.74 555 540 140.2
A 9 13 735209 5240.23 555 540 140.2
A 12 3 330483 2353.41 555 540 140.2
B 4 206 1467346 8913.51 775 749 164.5
B 4 81 557671 3384.79 775 749 164.5
B 4 171 242554 1469.61 775 749 164.5
C 15 147 820488 3918.28 755 748 209.2
C 0 193 603404 2880.64 755 748 209.2
C 4 5 529786 2528.75 755 748 209.2
D 8 176 3123417 14930.54 747 720 209.1
D 15 42 522610 2495.31 747 720 209.1
D 3 12 329906 1573.94 747 720 209.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter